Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

540Maggenti and Gardnerforms, the non-functional appendages between mandiblesand first maxillae. see superlinguae.maxim n. [L. maximus, greatest] (ARTHRO: Insecta) In Formicidae,a major worker or one of the soldier caste.mayrian furrow see notaulixmeatal cleft (ARTHRO: Insecta) A slit or line on the trumpet ofsome mosquito pupae extending into the meatus from thespiracular opening, facilitating enlargement of the openingat the surface of the water.meatus n. [L. metus, passage] A channel or duct.mechanical isolation Reproductive isolation due to mechanicalincompatibility of male and female genitalia.mechanoreceptor n. [Gr. mechane, contrivance; L. recipere,to receive] Specialized structures that perceive any mechanicaldistortion of the body, i.e., touch, vibrations, altitudeand gravity.meconida n.pl.; sing. -ium [Gr. mekon, poppy] 1. (ARTHRO:Insecta) Waste products of pupal metabolism that are dischargedshortly after adult emergence. 2. (CNID: Hydrozoa)Medusoid gonophores, sessile or pedicellate, which uponemergence from the gonangium act as external brood sacs.meconium n.media n. [L. medius, middle] 1. The middle structure. 2. (AR-THRO: Insecta) The longitudinal vein between the cubitusand the radius of the wing. medial a.mediad adv. [L. medius, middle; ad, toward] Toward the medianplane or line; mesad; admedial.medial cross vein (ARTHRO: Insecta) A cross vein connectingtwo branches of the media of the wing.medial-cubital cross vein (ARTHRO: Insecta) A cross vein ofan insect wing between the posterior medial vein and theanterior cubital vein.median a. [L. medius, middle] In the middle; along the midlineof the body; middle variate when variates are arranged inorder of magnitude.median bulb see metacorpus